The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.[unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]

What is peat?? I thought it was a kind of wood, but have been told that it is the mushy stuff on the bottom of a lake, or something you out in a filter.
I personally believe the lake one, based on who told me. Could someone clarify this?